Brick-press



25 earthy -or plastic materials.

` machinel propose 'to place in direct com-v munication with the .pugkmill in order .to keep Vup a regular vand continuous supply of j 1beseen that when forced down it never .en-

tirely closes `the opening C,Yso that there is always a -free passagefor the clay back 'into the mill before the pressurebecomes `so greatlUNITED -sTATEs PATENT oFFioE. f

ALFRED .Hf-ALL, yor ooXs'AoKIE, NEW -YORK.

LBRICK-rREss.

Specification of Letters Patent No. 5,128, dated May 22,1847.

specification, in which- Figure l is a side elevation of-the pug milland molding machine; Flg. 2 1s a plan of the frame .and ycarriage of themolding machine; Fig. 3 is a sectional elevation.; and Fig. L is 'afront view. Y

, The same letters indicate like lparts in all the figures.l

The nature of my inventionconsists in a 1 I A' peculiar v constructionof machinery to be worked by'hand and horse power for producing in'anexpeditious and. eflicient manner, bricks, tiles and other .articlesfrom clay to the molds.

y. In the accompanying drawings A) is the pug mill set on brick work (B,B); ,at

'the bottom of .thejmill is .a metal step (a) in which a vertical 'shaft(b) works. This shaft is supported at its upper end Around .the shaft(b) a number lof horizontal 'cutters -or lknives (c, 0, 0)* are .setjradially; theinner ends of the knives are.

chamfered olf .so that vthe ends of two opposite knives may enterthesamesocket as shown by the dottedlines (0') Fig. 3,; when l thusarranged they Aare secured in their proper position by clenching asshown in the` At .the lower vsectional :elevations at (0.2.). end of theshaft (b) are four radial plates (al. fl) extending horizontally fromthe shaft each pair `crossing vthe other'at right angles.'

-'the chamber of the molding machine; vtheir facesare setobliquely .to"the shaft as `shown'at Fig. 3, f(rZj)lf(D`) lis the chambery Themolding i 'by .a `g .framing attached :to .the top lof jthemill .and isfurnished with a lever to vwhich 'horse power is applied .for 'turningthe same..

which receives the clay or other plastic material from the pug mill andforthis purpose iits close over the opening (c) as will be hereafterdescribed. The sides .of the chamber are formed by two iron plates (f,f.)

boltedV to a strong frame (E, which supy po-rts the various parts .ofthe moldin machine. The shape of these plates will `be, best seen byreferring to the elevation Fig. l. (g, g) is acast iron gratingconnected to the side plates (f, f) and .forms the bottom l.

of thechamber (D), Fig. 3. The constructionof this grating consists ofarectangular frame withcross bars` or divisions equal yin number to thebricks or tiles to be produced at one working, lor rather with thenumber ofecompartments in the molds which `are succssively placedbeneath it. (la.) ,is ahorizontal shaft which has its bearings in theside plates (f, f), Fig. 4, and -is intended to carry the quadrant`brackets which are ,v e,

each provided with a segment rack; The shaft (71,)l also forms thefulcrum of peculiarly formed pressing plate (7a," la) which,l extendsthe whole width of lthe chamber (D.)

land forms a partial covering thereto. This.

plate is intended yto rise and *fall vin ,order to .force the clay inthe` chamber (D.) :through thel grating into 'the molds, but it will' asto cause .it to break. To prevent the'escape of .clay over the pressingplate a segment .piece is provided which will be in close it two pinions(m, m) are mounted,fthese pinions gear into the segment racks on thebrackets (i, i), and are actuatedfby a Ahand lever keyed on the sameshaft; (0) .is a rod which passes through lugs or ears on thevquadrantbrackets (t, i) and the rpressing plate (7.5) and isintended toattachthem together in order that theirV movements (when the pinionwheels (m, m) are caused to revolve) Vmay be simultaneous thesersegments are connected with the pressing plate as. far back aspossible, so that the .fullpmotion can be ygiven tothe said platewithoutmakingslits in the side plates, as has been heretofore customaryby simply cutting out 'the plates (f) on the back edge, by which'Idispense with the slides used in my 4former press without leaving openins forthe escape of the clay at the sides p) i's a board f secured to theplates (ff) and is intended to cover the opening between the presserplate (lc) and the side of the pug mill (20') is a rod having itsbearings in the plate (f, and serves to carry the scraper .(s), whichextends the whole width of the chamber (D), and is for the purpose ofcleaning oif the clay from the segmental portion of the pressing plateV(7c) at certain Vperiods of the operations of the machine. The rod (p)also supports the catches or hooks (y) which hook into a staple in thepug mill and thus hold the chamber (D) firmly thereto.

Within the frame work (E, E), (which may be termed the stationary framework) an adjustable" framing (F) is suspended in the following manner:pendant from the upper part of the frame work (F) are four bolts (l, l)and (2, 2) tapped at their lower ends and furnished with nuts. The bolts(l, l) support the brackets (3, 3) which slide in guides, (see frontview, Fig. 4), and these brackets form bearings for a horizontal shaft(4) upon which two sockets (5, 5) are keyed which receive and supportthe arms (6, 6) attached to the framing (F), and at the right hand endof the shaft alever (7) is keyed as shown in the drawing. The bolts (2,2) at the other end' of the frame work (E) support a cross bar (8) whichcarries the inner end'of the framing (F). This framing is attached toand forms one with the cast iron beds or gratings (r) and (s), (see Fig.2.) which support the molds for forming the bricks, tiles, or otherarticles. VBetween these beds or gratings anti-friction rollers (g, g,g) are 40 loosely mounted, as shown in sectional elevation Fig. 3, thetop of the rollers being on a level with the upper surface of the beds.At the lower part of the framing (F) arel bearings to receive ahorizontal shaft 45 which carries a vibrating lever (t), to the upperend of which a lever (u) is jointed which branches out into the form'ofaV and turns up at its ends at right angles; this is bolted to an axle(w) having on it a pair 50 of guide wheels (fw, lw); Ithese wheels areeach provided with a flange which runs upon a rail (15) see Fig. 3, thatis attached to the inside of the upper face of the framing; these rails(15) are curved down'- 55 ward on their upper edgeV as shown in thefigure, the curvature being such as to prevent the forward portion ofthe axle or cross bar (m) from rising or falling as it is movedl`forward by the arm (t) as would 60 otherwise'be the v case from itsconnectionV with the arm (t) on a vibrating shaft, for it will beperceived the curvature of the rail so corresponds withthe curvilinearmotion of the end of the arm (t) as to always keep the front part of theaxle or carriage m 'j shown only in Fig. 4. To Vthe ends of the V shapedlever(u) a cross bar is bolted; (y) is a-lever for actuating the lever(t) and the parts connected therewith.

. Having described the various parts of the machinery whereby I amenabled to mold bricks, tiles, and other articles, I will now proceed todescribe the action of the same. Rotary motion being given to thevertical shaft. (ZJ) of the pugmill, the plates (d, d) will force theclay through the opening (C) into the chamber (D) and supporting themold to be placed upon the rollers (g) in the position shown at Fig. 3,the hand lever (u) is brought down forward, which giving rotary motionto the p-inions (m, m) in gear with the segment racks, will bring downthe pressingplate (7c) and force the clay into the compartments of themold; `when a sufficient pressure has been p-ut on` the clay by thismeans, the workman thenpulls down the lever (y) (letting go at the sametime-the hand lever (n)) which action `will cause the lever (t) to4advance and draw forward the lever (u), and with it the cross bar oraxle (H), This bar (guided in its course by the wheels (w) will pushforward a mold previously placed in front of it as at (e) Fig. 3 anddrive that mold to the position of the mold nowfull ofclay from underthe grating (g) in escaping from which ythe superfluous clay willbe reimoved by the inner edge of the inclined side of the gratings (g3). Thefull mold will then arrive at the position on theframing of the mold(z2) from whenceit is ready to be carried to the drying ground. Bythrowing up the lever (y) the bar (I-I) will recede to its formerstation and an` other empty mold being placed beforel it the samemovement will be repeated after the vmoldv last pushed under the grating('g) is filled with clay as before described. If by any accident a stoneor otherhard substance should get into the clay and st-op the properaction of the molding machine it is only necessary to depress the lever(7) on the shaft (4) which will bring down the framing a suflicientdistance for the mold to be released.

I would here remark -that in order to insure `the moldingof perfectbricks it is necessary to make` the cross bars ofthe grating (g) so thatthat face of the bars which is nearestthe center of the grating shallproject farther over the divisions of the molds than their opposite faceand thus Vthe free lateral course of the clay is regulated which willprevent the sand from being swept from the sides of the molds, as shownat (fu, lv), Fig. 4, by dotted lines (v) being the partitions of themolds.

To prevent the oscillation of the inner `framing (F) projecting pins areprovided Which abut against the stationary frame Work (E) as will beseen in the Vplan at (y', j), Fig. 2. It is obvious that by employlngmolds of a suitable shape and a grating (g) corresponding thereto myimproved machine may be made to produce bricks and tiles of various,shape.

In conclusion I Wish it to be understood that I do not limit myself tothe exact construction of apparatus above described for molding bricksas many parts may be modied Without departing from the nature of myinvention.

What I claim as my invention and desire to secure by Letters Patentis- 1. The combination of the press with the pug mill, as above setforth so that While the clay is being pressed into the mold it the millby Which much of the danger of breaking the parts is obviated.

2. I also claim thecurved railway in com- I bination With the movablecarriage for forcing inthe molds, s'othat said carriage shall have itsfront at the same level at' all times. f

3. Lastly I claim the method of constructf ing the press so that theside plates do not require to be made with a slot in them, by carryingthe shaft that connects the press with the segments back so as to befree to ac t as herein specified, Without passing beplate moves backto..

low the point the press ALFRED HALL. Witnesses:

WILLIAM E. LEE'm,

JOHN B. BRONK,

